Fig. 3: Longitudinal study of pPD cohort.

A Correlations of the baseline ALPS index with ΔUPDRS-III score in entire pPD cohort. B Correlations of the baseline ALPS index with ΔPDNMS score in entire pPD cohort. C Longitudinal ALPS index in converted pPD subgroup. ΔUPDRS-III and ΔPDNMS are defined as the value at the end of follow-up minus the baseline value. Controlling for age, sex, education level, and baseline UPDRS-III or PDNMS scores.